Crank, no spark

ando67 · 08-27-2010, 07:35 AM

Reconditioned the injectors and now it runs , but only when I hard wire the starter. With the ignition on and running a wire from the starter and touching the battery, it starts and idles beautifully. A bit rough on acceleration, but I suspect the plugs or a faulty lead.

I bought another ignitor and coil and still no spark when cranking.

This is frustrating, as I've checked the voltages at the ECU for what feels like the tenth time. There is voltage at the coil when cranking.

The other problem I have is that the digital tacho isn't working either.

ando67 · 08-29-2010, 09:09 AM

Hello,
had another try at fixing the no spark issue with the 6MGE, and found the problem. I disconnected the tacho connection, and the engine now starts. Now I just don't know why.
Has anyone come across this before, when swaping a 5ME with a 5/6/7MGE. The ignitor is different between the 5ME and the 6MGE, so I was wondering if there is some sort of modification I need to do to the tacho, to make it work ?
Paul

08-27-2010, 07:35 AM	#1
ando67 Stock Join Date: Jun 2008 Location: Australia Posts: 4	Crank, no spark Reconditioned the injectors and now it runs , but only when I hard wire the starter. With the ignition on and running a wire from the starter and touching the battery, it starts and idles beautifully. A bit rough on acceleration, but I suspect the plugs or a faulty lead. I bought another ignitor and coil and still no spark when cranking. This is frustrating, as I've checked the voltages at the ECU for what feels like the tenth time. There is voltage at the coil when cranking. The other problem I have is that the digital tacho isn't working either.

08-29-2010, 09:09 AM	#2
ando67 Stock Join Date: Jun 2008 Location: Australia Posts: 4	Crank, no spark Hello, had another try at fixing the no spark issue with the 6MGE, and found the problem. I disconnected the tacho connection, and the engine now starts. Now I just don't know why. Has anyone come across this before, when swaping a 5ME with a 5/6/7MGE. The ignitor is different between the 5ME and the 6MGE, so I was wondering if there is some sort of modification I need to do to the tacho, to make it work ? Paul

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Crank Pulley	btwilson86	MKIII Supra	10	05-22-2010 03:30 AM
rebuilt hard to crank (high engine resistance); need advice	cbrewster	MKIII Supra	4	09-28-2009 04:52 PM
No spark issues	DDBT	MKII Supra	2	01-06-2009 07:08 AM
NGK Spark Plugs	91 Supra	MKIII Supra	5	08-07-2007 03:52 AM
1986.5 with blown Head Gasket - Removing Spark Plugs	unkymurch	Non-Generation Specific Questions	10	03-02-2007 06:48 PM